Swaps: Add minced jalapeno for heat, or fold in fresh corn kernels midsummer. No buttermilk? Stir 1 teaspoon lemon juice into 1/3 cup milk. Storage: keeps 2-3 days refrigerated - reheat in a skillet or air fryer for crunch (not the microwave). Freeze in a single layer, then bag up to 2 months. Make-ahead: mix the dry ingredients ahead and add the wet just before frying.